There will soon be 50,000 FTX systems in single-family houses in Sweden. Snart 50,000 FTX system i Svenska smahus.

A market review of inlet/exhaust ventilation with heat recovery in single family houses. Traces recent developments in new house production. Tabulates review on several criteria including manufacturer, type, flow rate, frost protection, position of heat exchanger, type approval. Review covers over 40,000 units installed.